:root {
    --paper: #f4f6f5;
    --card: #ffffff;
    --ink: #17211e;
    --ink-soft: #4a5a54;
    --line: #d8e0dc;
    --green: #1f6f54;
    --green-deep: #14513d;
    --amber: #a97a24;
    --loss: #a2402e;
    --hero-ink: #101a17;
    --hero-paper: #eef3f0;
    --shadow: 0 1px 2px rgba(16, 26, 23, .06), 0 8px 24px rgba(16, 26, 23, .07);
  }
  @media (prefers-color-scheme: dark) {
    :root {
      --paper: #101815;
      --card: #172119;
      --ink: #e6ede9;
      --ink-soft: #93a49c;
      --line: #2a3630;
      --green: #4fb08c;
      --green-deep: #6cc7a4;
      --amber: #d4a24c;
      --loss: #d97b66;
      --shadow: 0 1px 2px rgba(0,0,0,.4), 0 8px 24px rgba(0,0,0,.35);
    }
  }
  :root[data-theme="dark"] {
    --paper: #101815;
    --card: #172119;
    --ink: #e6ede9;
    --ink-soft: #93a49c;
    --line: #2a3630;
    --green: #4fb08c;
    --green-deep: #6cc7a4;
    --amber: #d4a24c;
    --loss: #d97b66;
    --shadow: 0 1px 2px rgba(0,0,0,.4), 0 8px 24px rgba(0,0,0,.35);
  }
  :root[data-theme="light"] {
    --paper: #f4f6f5;
    --card: #ffffff;
    --ink: #17211e;
    --ink-soft: #4a5a54;
    --line: #d8e0dc;
    --green: #1f6f54;
    --green-deep: #14513d;
    --amber: #a97a24;
    --loss: #a2402e;
    --shadow: 0 1px 2px rgba(16, 26, 23, .06), 0 8px 24px rgba(16, 26, 23, .07);
  }

  * { box-sizing: border-box; }
  html { scroll-behavior: smooth; }
  @media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }
  body {
    margin: 0;
    background: var(--paper);
    color: var(--ink);
    font-family: -apple-system, "Segoe UI", system-ui, sans-serif;
    line-height: 1.6;
    font-size: 16px;
  }
  .serif { font-family: "Iowan Old Style", "Palatino Linotype", Palatino, Georgia, serif; }
  .mono { font-family: ui-monospace, "SF Mono", "Cascadia Code", Consolas, monospace; font-variant-numeric: tabular-nums; }

  .wrap { max-width: 1080px; margin: 0 auto; padding: 0 24px; }

  a:focus-visible, button:focus-visible, input:focus-visible {
    outline: 2px solid var(--green);
    outline-offset: 2px;
  }

  /* ---------- header ---------- */
  header.site {
    display: flex; align-items: center; justify-content: space-between;
    padding: 20px 0;
  }
  .logo { display: flex; align-items: center; gap: 10px; text-decoration: none; color: inherit; }
  .logo svg { display: block; }
  .logo b {
    font-family: "Iowan Old Style", "Palatino Linotype", Palatino, Georgia, serif;
    font-size: 1.2rem; letter-spacing: .01em;
  }
  nav.top { display: flex; gap: 28px; align-items: center; }
  nav.top a { color: var(--ink-soft); text-decoration: none; font-size: .92rem; }
  nav.top a:hover { color: var(--ink); }
  nav.top a.cta {
    color: var(--paper); background: var(--green); padding: 8px 18px; border-radius: 3px;
    font-weight: 600;
  }
  nav.top a.cta:hover { background: var(--green-deep); color: var(--paper); }
  @media (max-width: 720px) { nav.top a:not(.cta) { display: none; } }

  /* ---------- hero ---------- */
  .hero { padding: 40px 0 44px; display: grid; grid-template-columns: 1.05fr .95fr; gap: 56px; align-items: center; }
  @media (max-width: 880px) { .hero { grid-template-columns: 1fr; padding-top: 32px; } }
  .eyebrow {
    text-transform: uppercase; letter-spacing: .14em; font-size: .74rem; font-weight: 600;
    color: var(--green); margin: 0 0 18px;
  }
  h1 {
    font-family: "Iowan Old Style", "Palatino Linotype", Palatino, Georgia, serif;
    font-weight: 500; font-size: clamp(2.1rem, 4.6vw, 3.3rem);
    line-height: 1.12; margin: 0 0 20px; text-wrap: balance;
  }
  h1 em { font-style: italic; color: var(--green); }
  .hero p.lede { color: var(--ink-soft); font-size: 1.08rem; max-width: 34rem; margin: 0 0 30px; }
  .hero-ctas { display: flex; gap: 14px; flex-wrap: wrap; }
  .btn {
    display: inline-block; padding: 12px 26px; border-radius: 3px; text-decoration: none;
    font-weight: 600; font-size: .95rem; border: 1px solid transparent; cursor: pointer;
  }
  .btn.primary { background: var(--green); color: var(--paper); }
  .btn.primary:hover { background: var(--green-deep); }
  .btn.ghost { border-color: var(--line); color: var(--ink); background: transparent; }
  .btn.ghost:hover { border-color: var(--ink-soft); }

  /* ledger card */
  .ledger {
    background: var(--card); border: 1px solid var(--line); border-radius: 6px;
    box-shadow: var(--shadow); overflow: hidden;
  }
  .ledger-head {
    display: flex; justify-content: space-between; align-items: baseline;
    padding: 14px 18px; border-bottom: 1px solid var(--line);
  }
  .ledger-head .t { font-weight: 600; font-size: .9rem; }
  .ledger-head .sample {
    font-size: .68rem; text-transform: uppercase; letter-spacing: .1em; color: var(--ink-soft);
  }
  .ledger-scroll { overflow-x: auto; }
  table.book { border-collapse: collapse; width: 100%; min-width: 430px; font-size: .82rem; }
  table.book th {
    text-align: left; font-weight: 600; text-transform: uppercase; letter-spacing: .08em;
    font-size: .66rem; color: var(--ink-soft); padding: 10px 12px; border-bottom: 1px solid var(--line);
  }
  table.book td { padding: 10px 12px; border-bottom: 1px solid var(--line); white-space: nowrap; }
  table.book tr:last-child td { border-bottom: none; }
  td.num, th.num { text-align: right; }
  .win { color: var(--green); font-weight: 600; }
  .lose { color: var(--loss); font-weight: 600; }
  .ledger-foot {
    display: flex; gap: 26px; padding: 13px 18px; border-top: 1px solid var(--line);
    background: color-mix(in srgb, var(--green) 5%, var(--card));
  }
  .stat .k { font-size: .66rem; text-transform: uppercase; letter-spacing: .1em; color: var(--ink-soft); }
  .stat .v { font-weight: 700; font-size: 1.02rem; }

  /* ---------- sections ---------- */
  section { padding: 38px 0; }
  .sec-label {
    text-transform: uppercase; letter-spacing: .14em; font-size: .72rem; font-weight: 600;
    color: var(--amber); margin: 0 0 10px;
  }
  h2 {
    font-family: "Iowan Old Style", "Palatino Linotype", Palatino, Georgia, serif;
    font-weight: 500; font-size: clamp(1.5rem, 3vw, 2.1rem); line-height: 1.2;
    margin: 0 0 14px; text-wrap: balance;
  }
  .sec-intro { color: var(--ink-soft); max-width: 40rem; margin: 0 0 28px; }

  .gates { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
  @media (max-width: 820px) { .gates { grid-template-columns: 1fr; } }
  .gate { background: var(--card); border: 1px solid var(--line); border-radius: 6px; padding: 24px; }
  .gate .mono { color: var(--green); font-size: .78rem; display: block; margin-bottom: 12px; }
  .gate h3 { margin: 0 0 8px; font-size: 1.05rem; }
  .gate p { margin: 0; color: var(--ink-soft); font-size: .92rem; }

  /* product split */
  .split { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
  @media (max-width: 820px) { .split { grid-template-columns: 1fr; } }
  .product {
    background: var(--card); border: 1px solid var(--line); border-radius: 6px; padding: 30px;
    display: flex; flex-direction: column; gap: 12px;
  }
  .product h3 { margin: 0; font-size: 1.3rem; font-family: "Iowan Old Style", "Palatino Linotype", Palatino, Georgia, serif; font-weight: 600; }
  .product .tag { font-size: .7rem; text-transform: uppercase; letter-spacing: .12em; color: var(--green); font-weight: 700; }
  .product p { margin: 0; color: var(--ink-soft); font-size: .95rem; }
  .product ul { margin: 6px 0 0; padding: 0 0 0 18px; color: var(--ink-soft); font-size: .92rem; }
  .product li { margin-bottom: 6px; }
  .product li b { color: var(--ink); font-weight: 600; }

  /* pricing */
  .tiers { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
  @media (max-width: 980px) { .tiers { grid-template-columns: repeat(2, 1fr); } }
  @media (max-width: 560px) { .tiers { grid-template-columns: 1fr; } }
  .tier {
    background: var(--card); border: 1px solid var(--line); border-radius: 6px; padding: 24px;
    display: flex; flex-direction: column;
  }
  .tier.flagship { border-color: var(--green); border-width: 2px; position: relative; }
  .tier.flagship::before {
    content: "Flagship"; position: absolute; top: -11px; left: 20px;
    background: var(--green); color: var(--paper); font-size: .64rem; font-weight: 700;
    text-transform: uppercase; letter-spacing: .1em; padding: 3px 10px; border-radius: 2px;
  }
  .tier h3 { margin: 0 0 4px; font-size: 1rem; }
  .tier .price { font-family: ui-monospace, "SF Mono", "Cascadia Code", Consolas, monospace; font-size: 1.5rem; font-weight: 700; margin: 6px 0 2px; }
  .tier .per { color: var(--ink-soft); font-size: .78rem; margin-bottom: 14px; }
  .tier ul { margin: 0 0 20px; padding: 0 0 0 17px; color: var(--ink-soft); font-size: .87rem; flex: 1; }
  .tier li { margin-bottom: 7px; }
  .tier .btn { text-align: center; }

  /* faq */
  .faq details {
    background: var(--card); border: 1px solid var(--line); border-radius: 6px;
    padding: 4px 20px; margin-bottom: 10px;
  }
  .faq summary { cursor: pointer; font-weight: 600; padding: 12px 0; font-size: .97rem; }
  .faq p { color: var(--ink-soft); margin: 0 0 16px; font-size: .93rem; max-width: 44rem; }

  /* waitlist */
  .waitlist {
    background: var(--card); border: 1px solid var(--line); border-radius: 8px;
    padding: 44px 32px; text-align: center; box-shadow: var(--shadow);
  }
  .waitlist form { display: flex; gap: 10px; justify-content: center; flex-wrap: wrap; margin-top: 24px; }
  .waitlist input[type="email"] {
    padding: 12px 16px; border: 1px solid var(--line); border-radius: 3px; min-width: 0; width: 280px; max-width: 100%;
    font-size: .95rem; background: var(--paper); color: var(--ink);
  }
  .waitlist .fine { font-size: .78rem; color: var(--ink-soft); margin-top: 14px; }

  /* footer */
  footer.site { padding: 28px 0 40px; color: var(--ink-soft); font-size: .82rem; }
  footer.site .disclaimer { max-width: 60rem; margin: 0 0 20px; line-height: 1.7; }
  footer.site .row { display: flex; justify-content: space-between; gap: 20px; flex-wrap: wrap; }

  a { color: var(--green); }
  button, input, select { font: inherit; }
  button:disabled { opacity: .6; cursor: not-allowed; }
  .consent { display: block; flex-basis: 100%; font-size: .84rem; color: var(--ink-soft); }
  .consent input { width: auto; margin-right: 8px; }
  .trap { position: absolute; left: -10000px; width: 1px; height: 1px; overflow: hidden; }
  .status { font-size: .88rem; color: var(--ink-soft); overflow-wrap: anywhere; }
  .error { color: var(--loss); }
  .billing-note { margin: 0 0 28px; }
  .ledger .status { margin: 10px 18px; }
  .ledger-head { gap: 12px; flex-wrap: wrap; }
  .ledger-foot { gap: 20px; flex-wrap: wrap; }
  main.inner { max-width: 1080px; margin: 0 auto; padding: 32px 24px 48px; }
  main.narrow { max-width: 760px; }
  fieldset { border: 0; padding: 0; margin: 0; min-width: 0; }
  fieldset label { display: block; margin: 16px 0; }
  select, input[type="password"], input[type="text"] { max-width: 100%; background: var(--paper); color: var(--ink); border: 1px solid var(--line); border-radius: 3px; padding: 12px; }
  input.key { width: 100%; }
  .stack > * + * { margin-top: 22px; }
  #signals { display: grid; gap: 16px; }
  #signals p { overflow-wrap: anywhere; }
  [hidden] { display: none !important; }
  @media(max-width: 560px) { section { padding: 28px 0; } .hero { gap: 30px; } .waitlist { padding: 28px 20px; } }

  /* Downloads: app identity and availability stay visible on small screens. */
  .download-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 20px; }
  .download-card { background: var(--card); border: 1px solid var(--line); border-radius: 6px; padding: 28px; display: flex; flex-direction: column; }
  .download-title { display: flex; align-items: center; gap: 14px; margin-bottom: 16px; }
  .download-title img { border-radius: 12px; flex-shrink: 0; }
  .download-title h3 { margin: 0; font-size: 1.2rem; line-height: 1.25; }
  .download-title .download-kicker { text-transform: uppercase; letter-spacing: .1em; color: var(--green); font-size: .68rem; margin: 0 0 5px; }
  .download-card > p { color: var(--ink-soft); font-size: .93rem; margin: 0 0 14px; }
  .download-card .download-requirement { font-size: .84rem; flex-grow: 1; }
  .download-actions { display: flex; flex-direction: column; align-items: flex-start; gap: 12px; margin-top: 8px; }
  .download-actions .btn { padding: 12px 18px; }
  .platform-status { font-size: .83rem; color: var(--ink-soft); }
  .download-card .download-meta { font-size: .74rem; margin: 12px 0 0; }
  .download-help { display: flex; justify-content: space-between; gap: 14px; flex-wrap: wrap; color: var(--ink-soft); font-size: .87rem; margin: 20px 0 0; }
  .download-instructions { max-width: 760px; }
  .download-instructions li { margin-bottom: 12px; color: var(--ink-soft); }
  .download-instructions code, .checksum { overflow-wrap: anywhere; }
  .download-instructions details { margin-top: 22px; }
  .download-instructions summary { cursor: pointer; font-weight: 600; }
  .checksum { font-size: .76rem; }
  @media(max-width: 820px) { .download-grid { grid-template-columns: 1fr; } }
  @media(max-width: 720px) { nav.top a.download-nav { display: inline; } nav.top { gap: 14px; } nav.top a.cta { display: none; } .download-card { padding: 24px; } }